New records and nomenclatural notes in the Specklinia grobyi complex (Orchidaceae, Pleurothallidinae) from Peru, including the description of a new species from the western Amazon

Abstract

The systematics of the Specklinia grobyi complex in Peru is reconsidered. Traditionally referred as a widely distributed species, the Specklinia grobyi complex is recognized here to comprise six closely related taxa. The taxonomic identities of S. crepidophylla, S. densifolia, S. florulenta, S. grobyi, and S. picta are discussed, and S. bretannensis is described and illustrated.

Specklinia bretannensis, from the plains of the western Amazon region, is compared with S. grobyi and other morphologically similar taxa. Additionally, new combinations in Specklinia are proposed for Pleurothallis crepidophylla and P. densifolia, while Specklinia florulenta is recognized as an accepted name here. A lectotype for P. densifolia is proposed, as no holotype was designated by its author among the several duplicates of the original collection.